| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_TRACK_HOST_BASE_H_ |
| #define CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_TRACK_HOST_BASE_H_ |
| |
| #include "base/compiler_specific.h" |
| #include "content/common/content_export.h" |
| #include "ppapi/host/resource_host.h" |
| #include "ppapi/shared_impl/media_stream_buffer_manager.h" |
| |
| namespace content { |
| |
| class RendererPpapiHost; |
| |
| class PepperMediaStreamTrackHostBase |
| : public ppapi::host::ResourceHost, |
| public ppapi::MediaStreamBufferManager::Delegate { |
| protected: |
| PepperMediaStreamTrackHostBase(RendererPpapiHost* host, |
| PP_Instance instance, |
| PP_Resource resource); |
| virtual ~PepperMediaStreamTrackHostBase(); |
| |
| enum TrackType { |
| kRead, |
| kWrite |
| }; |
| bool InitBuffers(int32_t number_of_buffers, |
| int32_t buffer_size, |
| TrackType track_type); |
| |
| ppapi::MediaStreamBufferManager* buffer_manager() { return &buffer_manager_; } |
| |
| // Sends a buffer index to the corresponding MediaStreamTrackResourceBase |
| // via an IPC message. The resource adds the buffer index into its |
| // |buffer_manager_| for reading or writing. |
| // Also see |MediaStreamBufferManager|. |
| void SendEnqueueBufferMessageToPlugin(int32_t index); |
| |
| // Sends a set of buffer indices to the corresponding |
| // MediaStreamTrackResourceBase via an IPC message. |
| // The resource adds the buffer indices into its |
| // |frame_buffer_| for reading or writing. Also see |MediaStreamFrameBuffer|. |
| void SendEnqueueBuffersMessageToPlugin(const std::vector<int32_t>& indices); |
| |
| // ResourceMessageHandler overrides: |
| virtual int32_t OnResourceMessageReceived( |
| const IPC::Message& msg, |
| ppapi::host::HostMessageContext* context) OVERRIDE; |
| |
| // Message handlers: |
| virtual int32_t OnHostMsgEnqueueBuffer( |
| ppapi::host::HostMessageContext* context, int32_t index); |
| |
| private: |
| // Subclasses must implement this method to clean up when the track is closed. |
| virtual void OnClose() = 0; |
| |
| // Message handlers: |
| int32_t OnHostMsgClose(ppapi::host::HostMessageContext* context); |
| |
| RendererPpapiHost* host_; |
| |
| ppapi::MediaStreamBufferManager buffer_manager_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PepperMediaStreamTrackHostBase); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_TRACK_HOST_BASE_H_ |